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Finding the Fourth Proportional to 15,900.63, 21,943.86 and 8,827.17

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Solution

The fourth proportional to 15,900.63, 21,943.86 and 8,827.17 is: 12,182.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.63 : 21,943.86 = 8,827.17 : x
  2. Step 2: Convert to fraction form
    15,900.63/21,943.86 = 8,827.17/x
  3. Step 3: Cross multiply
    15,900.63x = 21,943.86 × 8,827.17
  4. Step 4: Simplify right side
    15,900.63x = 193,702,182.68
  5. Step 5: Solve for x
    x = 193,702,182.68/15,900.63
  6. Step 6: Final answer
    x = 12,182.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.